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Finding the Fourth Proportional to 399,480.64, 551,042.92 and 263,466.24

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Solution

The fourth proportional to 399,480.64, 551,042.92 and 263,466.24 is: 363,424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,480.64 : 551,042.92 = 263,466.24 : x
  2. Step 2: Convert to fraction form
    399,480.64/551,042.92 = 263,466.24/x
  3. Step 3: Cross multiply
    399,480.64x = 551,042.92 × 263,466.24
  4. Step 4: Simplify right side
    399,480.64x = 145,181,206,211.02
  5. Step 5: Solve for x
    x = 145,181,206,211.02/399,480.64
  6. Step 6: Final answer
    x = 363,424.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.